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Ernst Niebur: Up states are critical, down states are not

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Ernst Niebur: Up states are critical, down states are not


Published January 26, 2011


Talk by Ernst Niebur of Johns Hopkins University. Given to the Redwood Center for Theoretical Neuroscience at UC Berkeley.

Summary:
Neurons are found to have an excitable (up) state and a more depolarized (down) state. The activity in the up state follows a power law relationship which is characteristic of critical systems in many domains, for example avalanches of sand piles and fractals. The down state does not. Both analytic and computational modeling demonstrate that a network of leaky integrator neurons with the correct properties can also lead to matching properties in the up and down states. Includes some discussion with preeminent neuroscientist Walter Freeman of UC Berkeley towards the end of the lecture.


Audio/Visual sound, color

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